Totally, but the point of this paper isn't the people who already have $10mm. It's the people who want to get there, and what they're willing to sacrifice to do it. Building a massive business like say, Amazon, takes enormous personal sacrifice and risk. The high incomes that result from it incentivize that sacrifice/risk. They cause the person who currently has relatively little, to risk what they do have to produce something great, something that we all benefit from.

The point of this paper is that there is an amount of risk/sacrifice people will make for $10mm, that is different from what they will make for $100mm, and different still from what they'll make for $1b. By truncating the reward distribution at $10mm, you tell those people to pursue something else instead.

Bezos is actually an excellent example. In his career at DE Shaw, he was almost certainly making very high 6 figures or maybe even 7, or certainly on a career track to be doing so shortly. He threw that away to take a massive personal risk to build Amazon. Would he have done that if you capped his potential reward at $10mm? Or would he have stayed in his comfortable finance job, making a bit less than that?